protesters have been very passionate, bitterly defensive about what they call the sanctity of marriage, and it shows how effective organizers had been in appealing to people of very diverse backgrounds, many who do not usually take to the streets. >> the demographics of these protesters -- they look very young on the pictures. you would think they might be more open-minded on this topic? >> you think so, but an overwhelming majority are in favor of gay marriage. we have seen a lot of people take center stage against, though. they have been seen in a very tense standoffs with riot police. i think comedians and leaders made the protest look hip and modern, and really struck a chord among young conservatives, who are usually quiet. >> that is all we have time for. we have to take a short break. >> when we come back, striking a balance between national security and privacy protection. >> stay tuned. >> welcome back. in a week that saw terror attacks and foiled plots, the debate about privacy and security is back. germany's constitutional court has upheld the government's right to run an an